Yup - all kinds of drag- depending on what the source or what the result etc., we give it a "speshial" name -but still - we are simply working with low pressure.
good low pressure n bad low pressure -
if you attach a large plate to strings and then attach that plate to a harness and then stuff a parachutist into the harness - he may "fly" that plate sideways or even do a loop d loop.
sometimes th plate is actually lifting -sometimes just retarding the journey to earth
so is the air above the plate shifting from lift to drag?
Or is the pressure distribution above and below simply changing .
For years Iwas told "you need a proper airfoil to create lift
Never could figure THAT one out - turns out the fact was simply horse pucky.